Gridley Main Two
Solar power plant · Butte County, California
Nameplate capacity
2.5 MW
Rank in California
#1312
of 1,897 plants
In service since
2013
April 2013
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Altus Power America Management, LLC
- County
- Butte County
- Generating units
- 1
- Share of state capacity
- 0.00%
- Rank among solar plants in California
- #527 of 937
- EIA plant code
- 58371
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Solar Photovoltaic | 2.5 MW | 2.5 MW | 2013 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in California
| Colton Solar One, LLC | Solar | 2.5 MW |
| GEN005 Antibody Fuel Cell | Natural gas | 2.5 MW |
| IGS SBD2 | Solar | 2.5 MW |
| North Kern 1 | Solar | 2.5 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 2.5 MW solar plant and a 2.5 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All California power plants · What California actually generates